This part is a kind of semiconductor called G50T60.

Function of this product has LOW LOSS IGBT.

Manufacturers : Infineon Technologies

Image and pinout :

Some of the text within the PDF file :

IGW50N60T TRENCHSTOP™ Series Low Loss IGBT : IGBT in TRENCHSTOP™ and Fieldstop technology Features:  Very low VCE(sat) 1.5V (typ.)  Maximum Junction Temperature 175°C  Short circuit withstand time 5s  Designed for : - Frequency Converters - Uninterrupted Power Supply  TRENCHSTOP™ and Fieldstop technology for 600V applications offers : - very tight parameter distribution - high ruggedness, temperature stable behavior - very high switching speed - low VCE(sat)  Positive temperature coefficient in VCE(sat)  Low EMI  Low Gate Charge  Qualified according to JEDEC1 for target applications  Pb-free lead plating; RoHS compliant  Complete product spectrum and PSpice Models : http://www.infineon.com/igbt/ C G E PG-TO247-3 Type IGW50N60T VCE 600 V IC 50 [ ... ]

G50T60 PDF Datasheet Download